[xsl] Fwd: When you give generate-id a nodeset

Subject: [xsl] Fwd: When you give generate-id a nodeset
From: "Ihe Onwuka ihe.onwuka@xxxxxxxxx" <xsl-list-service@xxxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 5 Nov 2015 14:06:46 -0000
Came across something unexpected while doing the if/else hack to supply a
node to generate-id.

I have <xsl:key match="stuff | morestuff"
use="generate-id(ancestor::tr[predicate]  |

Some data
<tr pred="true" id="A">
<tr pred="true" id="B">
 <tr pred="true" id="C">
<tr pred="false">

So here stuff should  take the id of the tr parent and morestuff shouldl
take the id of the tr with id C.

Given that generate-id given  a nodeset only considers the first node I
thought wayhay that will work but it didn't until I included a first node
predicate explicitly like so.

xsl:key match="stuff | morestuff" use="generate-id(ancestor::tr[predicate]
 |  ancestor::tr[not(predicate)]/preceding-sibling::tr[predicate][1])"/>


Should such be necessary?. Only tried it running version 1.0 on  XSLTProc

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